The Witcher Potions - Dagon Sap
Dagon Sap Effects: When imbibed this mutagenic potion provides access to a special Strength attribute enhancement; the upgrade increases damage inflicted on opponents when the witcher is wounded.

Preparation: The potion is made by mixing Dagon secretions with ingredients providing one measure each of rebis, aether, hydragenum and vermilion; a strong, high-quality alcohol must be used as a base.

Duration: Instantaneous

Toxicity: None

The mages of old created the formula for this mutagenic potion which should, in theory, greatly strengthen a witcher physically. Their notes indicate that the secretions of the mythical being named Dagon are required to produce the potion.